gamble



(No Model.) 2 Sheets-Sheet 1.

J. E. GAMBLE.

BRICK KILN. No. 448,333. Patented Mar. 17, 189-1.

(No Model.) 2 Sheets-Sheet 2. J. E. GAMBLE.

BRICK KILN.

No. 448,333. Patented Mar. 17 1891.

. UNITED STATES Parent rrrcn.

JOHN E. GAMBLE, OF EAST LIVERPOOL, OHIO, ASSIGNOR OF ONE-HALF TOXVILLIAM BRUNT, OF SAME PLACE.

BRICK-KILN.

SPECIFICATION forming part of Letters Patent No. 448,333, dated March17, 1891..

Application filed January 81,1890. Serial No. 338,716! (No model.)

To (ZZZ whom it may concern.-

Be it known that I, JOHN E. GAMBLE, a citizen of East Liverpool, in thecounty of O- lumbiana and State of Ohio, have invented certain new anduseful Improvements in Pottery-Kilns and I do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains toto make and use the same.

My invention relates to an improvement in pottery-kilns, and has for itsobject to so construct the kiln that heat will be made to circulatethroughout the entire kiln in such a is manner as to heat the sameuniformly in all parts of its interior.

A further object is to produce a potterykiln so constructed and arrangedthat theinterior thereof will be heated uniformly with a comparativelysmall amount of fuel.

A further object is to provide a potterykiln having a dome or cone andso constructed that heat may be uniformly distributed throughout theinterior of the kiln proper be- 2 5 fore entering the dome or cone, andproviding means in such dome or cone for regulating the draft throughthekiln.

W'ith these objects in view my invention consists in certain novelfeatures of con- 0 struction and combinations and arrangements of parts,as hereinafter set forth, and pointed out in the claim.

In the accompanying drawings, Figure l is an elevation of my improvedkiln, partly in section. Fig. 2 is a view on the line at m of Fig. 1.Fig. 3 is an enlarged view illustrating a portion of the system of pipesor flues located in the base of the kiln.

A represents the kiln, over the crown U of 40 which a cone or dome E islocated and left open at its apex. Located at the base and extendingaround the circumference of the kiln is a series of furnaces A, eachfurnace comprising a pit a, a grate b, and an opening for a door 0.Communicating with each furnace A is a line B, which fines extendupwardly within the kiln in close proximity to the wall of the kiln andpreferably to points about midway between the top and bottom thereof,openings g being made in the Wall of the kiln just over thefurnace-doors c for the admission of air into the lines B, and othersmall air-holes g may be made in the wall of the kiln above the fines B.The bottomF of the kiln will preferably be located a short dis- 5 5tance from the ground and may be made of brick or other suitablematerial, and located a short distance above the bottom F is a floor Fthus producing a space Fdbetween the bottom F and the floor F. In thespace F a series of pipes Gis inserted, and consists of pipes h, pipes71., communicating at one end with the pipes 71, and short pipes 7L2,which connect the pipes h hat points between their ends. The pipes 71,with which the remaining pipes of the system communicate, as aboveexplained,are closed at theirouter ends, and at their inner endscommunicate with a central or main stack M, which, starting from thebottom F, extends centrally through the kiln and through an opening inthe crown C. This stack may be made of a series of sectionssecuredtogether by tongues and grooves. The floor F is provided with a seriesof perforations (Z, which communicate with the pipes G. A rod or bar cis secured in the dome or cone Eand adapted to extend across the centerof the same, being provided at a point immediately over the stack M witha bracket 6, which latter in turn supports a pulley 6 A cord or rope ispassed over the pulley c and has secured to one end a cap or damper D,the other extremity of the rope being carried out an opening or window'5 in the dome, by which means the damper D 8 5 is suspended over theoutlet of the stack M, and may be readily operated from outside the kilnto regulate the draft of air through the same. Fires being built in themouths or furnaces A, heat will ascend through the 0 ilues B to thecrown of the kiln, and then, being deflected by the concave interiorsurface of the crown, will descend to the floor F and pass through theperforations (Z into the series of pipes G, from whence the heated 9 5air passes into the stack hi, through which it passes into the dome orcone E, and finally through the open upper end of the cone into the openair. An opening or doorway II is provided, through which persons mayenter to fill the kiln with pottery to be burned. An opening may, ifdesired, be made in the crown 0, through which the hot air may escapewhen it is desired to permit the kiln to cool off, the opening beingnormally closed by means of a plug b.

5 Having fully described myinvention, What I claim as new, and desire tosecure by Letters Patent, is-

The combination, in a kiln, of the outer 'wall terminating at the top ina dome, furro naces arranged around the base of the wall, internal fluesleading from the furnaces and terminating at suitable distance above thefurnaces, base-Hues constructed to receive the heated air, and centralstack having openings at the bottom communicating with the base- 15fines, said stack terminating in the dome of the kiln at its upper end,substantially as set forth.

In testimony whereof I have signed this specification in the presence oftwo subscrib- 2o ing witnesses.

JOHN E. GAMBLE.

\Vitnesses:

J. H. BRooKEs, JOHN .T. PURINTON.

